Java program to pass an integer as argument and check whether the digits are in ascending order or not

Write a program to pass an integer as argument and check whether the digits are in ascending order or not.

class AscendingDigits
{
	public static void main(int a)
	{
		int i,d,d1,f=0;
		for(i=a;i>9;i=i/10)
		{
			d=i%10;
			d1=(i/10)%10;
			if(d<d1)
				f=1;
		}
		if(f==0)
			System.out.println("Digits are in ascending order");
		else
			System.out.println("Digits are not in ascending order");
	}
}